Wagelie, E. G. (1977). Study on some physical and chemical characteristics of Berkshire boar semen including effects of atmospheric temperature at collection time [microform]. Photoduplication Service. University of the Philippines Library.

Wagelie, Edwin G. Study on Some Physical and Chemical Characteristics of Berkshire Boar Semen Including Effects of Atmospheric Temperature at Collection Time [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Wagelie, Edwin G. Study on Some Physical and Chemical Characteristics of Berkshire Boar Semen Including Effects of Atmospheric Temperature at Collection Time [microform]. Photoduplication Service. University of the Philippines Library, 1977.